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Martian Census Data

It’s been a while since I posted anything about Project: Mars, so here we go…

A subtle but very important aspect of any fictional culture is its population. Specifically the census of age, gender and point of origin. I see Martian culture to be an interesting conflict of old world (from Earth) ways of life with new world (born on Mars) burgeoning tradition. To see just how much this affects the story, I needed some data… so it was off to the drawing board to model some population growth.

To the right, you can see a graph of population growth over time. The population represented here has two components (which I should have broken out, but didn’t), an immigrant part and a birthrate part. The immigrant portion of the population growth starts out modest and grows slowly over time. I simulated this with a logarithmic increase. The birthrate portion of the population represents actual births on Mars. This population is of particular interest to me because they represent the specific culture that I want to study. The population of Mars-born Martians grows exponentially; a lot like a compounded interest problem. You can see from the graph, we have a healthy concave up growth curve.

I had put the setting of this fiction about 250 years after the founding of the principal city (yet unnamed). After simulating 250 years, I ended with some interesting numbers… almost exactly 50% of the population at this point in time was born on Mars and the other 50 percent originated from Earth. I need to play with the simulation to have a more realistic age distribution… at the moment, I assume that medicine has advanced to the point where old age is no longer a fatal condition, so a histogram of counts by age will look unrealistically flat.

Another liberty that I took with the simulation was with gender. I assumed that the initial population would be male-heavy… which I set at 70% male. Subsequent immigration, I slanted a little bit less male (65%). To make things a bit more interesting, I assumed that natural birthrate on Mars would skew female, so 55% of children born on mars would be girls. Let’s take a look at how this pans out…

At year 250, we can see that all surviving people from Earth are totally skewed male. There are basically 2 men for every 1 woman. I could see how this would amount to some extreme competition and drama as men vie over the extreme scarcity of a mate. It could very well be that we see huge campaigns encouraging more women to head off to Mars… cuz, Mars Needs Women!

On the flip side of the coin, when we look at native born Martians, we see that women outnumber men. Of course, the gender difference won’t equal out to near 50/50 for probably another 50 years based on the simulation… but it’s clear to me that earth men will end up pairing up with martian women more often than not.